Both main characters of these dramas have similar abilities, especially the FL of Family Matters and the ML of Awaken. Those two characters can manipulate someone's mind yet they also have a difference. Anyhow, both dramas interestingly awaken your curiosity about their family matters.

1. Both stories have characters with special abilities who need to hide them from the layman to protect themselves.

same genre - just a comedy drama.
Both characters are in music industry but failed to remain in spotlight and make another career that they're not familiar with.

The story has the same concept - characters with unfulfilled dreams, trying to revive their business even though they lack of knowledge about it.
Both are comedy drama but of course Eulachacha Waikiki is funnier than this hehehehe.

Misaeng and Run On both about life. Im Si Wan is also the lead role. At Misaeng he is also an athlete who failed to become a professional go player and has to change his career. There's a lot of life lessons that you can jot down in that drama but you may found it kind of boring because there's not much music just a plain conversation as if you're observing an office life and how will Im Si Wan character will keep moving forward and keep moving up in his career. In Run On he failed to continue his first sports because of an injury then changed into a runner then retired as an athlete because of unpleasant incident. He'll learn to change career and keep moving on in his life.
Both drama teach a lesson about life, how to be a mature person.

Also starring Moon Ga Yeong and her role is also a shy young woman with insecurities because she easily turn red.
It is also a Rom-Com genre with love triangle between 2 friends.
She also has a younger brother who always annoy her but love her hehe

Circle and Awaken both similar when it comes on experimenting on human believing that it's an answer for humankind problems. Circle is about erasing PTSD completely (Post Traumatic Stress Disorder) because PTSD is a kind of mental illness that won't be cure but can be control while Awaken has making an experiment for immortality that is impossible for humankind.
It also has investigation and mystery.

Both issues are from the past. A lovers from the past that he need to protect even after several years.

Ha Ji Won is the main character
She is also a police officer who chases the leader who made fake money
Both action period drama

Both set in Jeju Island where you feel warm and cozy.
Both has a cozy kind of story - a simple and cute kind of Rom-Com.
It also has the same kind of story of moving on in life also in love. Also finding the right one for you at the right time with enough time.

Warm and Cozy is a Rom-Com drama that has a lot of funny and sweet scene too.

It also has investigation in the story and Dong Yi also has shrewd investigative skills and relentless drive for justice. She also hide her identity.